27-year old Sean Seeman was convicted of 12 felonies.
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Officers say Seeman attacked a barista at a Forestville coffee shop in July of 2018, and then tried to drag her into a bathroom while holding a nail to her neck.
The victim fought back and was helped by a customer until Seeman was taken into custody.
Later in jail, he tried to stab a deputy with a homemade shank.
Prosecutors say he also "gassed" officers multiple times, a term for when an inmate throws feces or bodily fluids at staff.
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A few months later, on September 17th, he attacked another deputy and tried to grab his gun while being escorted to court, authorities said.
Seeman's convictions include attempted sexual assault with a weapon, attempted kidnapping for purposes of sexual assault, commercial burglary, attempted murder of a peace officer, several counts of gassing, and obstructing law enforcement officers in the performance of their duties, according to a release from the Sonoma County District Attorney.
In addition to the sentence, Seeman was ordered to register as a sex offender for the remainder of his life.
Bay City News contributed to this report.